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    • 1. 发明授权
    • Magnetic recording head and method for manufacturing
    • 磁记录头及制造方法
    • US07333301B2
    • 2008-02-19
    • US10650832
    • 2003-08-29
    • Kimitoshi EtohNobuo YoshidaMoriaki FuyamaMakoto MorijiriKenichi MeguroIchiro OodakeKazue KudoYohji MaruyamaKatsuro Watanabe
    • Kimitoshi EtohNobuo YoshidaMoriaki FuyamaMakoto MorijiriKenichi MeguroIchiro OodakeKazue KudoYohji MaruyamaKatsuro Watanabe
    • G11B5/127
    • B82Y25/00B82Y10/00G11B5/3136G11B5/3909G11B5/3912Y10T29/49044
    • A thin-film magnetic head having little temperature rise in the element, good heat dissipation and a short magnetic path length (narrow coil pitch) and manufacturing method for same is provided. To form the coil of the thin-film magnetic head, a lower coil is first formed and after forming alumina and an inorganic compound containing alumina, a trench is formed for the upper coil by reactive ion etching. The lower coil allows uniform etching at this time and functions as a film to prevent loading effects occurring during reactive ion etching. This trench is then plated in copper and chemical mechanical planarization performed to form the upper layer coil as the dual-layer coil of the present invention. Heat from the coil is efficiently radiated towards the substrate by alumina and an inorganic compound containing alumina with good heat propagation. The ratio of alumina or inorganic compound containing alumina in the lower coil can be selected by reactive ion etching so that an upper coil trench functioning as an etching stopper can be securely formed to allow forming a stable coil film thickness and a short magnetic path length.
    • 提供元件温度上升较小,散热好,磁路长度短(窄线圈间距)及其制造方法的薄膜磁头。 为了形成薄膜磁头的线圈,首先形成下线圈,在形成氧化铝和含有氧化铝的无机化合物之后,通过反应离子蚀刻形成用于上部线圈的沟槽。 此时,下线圈允许均匀刻蚀,起到膜的作用,以防止在反应离子蚀刻期间发生的负载效应。 然后将该沟槽镀铜并进行化学机械平面化以形成上层线圈作为本发明的双层线圈。 来自线圈的热量通过氧化铝和含有良好热传播的氧化铝的无机化合物有效地朝向基板辐射。 可以通过反应离子蚀刻来选择下层线圈中的氧化铝或含有氧化铝的无机化合物的比例,从而可以可靠地形成用作蚀刻停止层的上部线圈沟槽,以形成稳定的线圈膜厚度和短的磁路长度。